Thermostatic begulatob fob incubators



I H. M. SHEER. THERMOSTATIG REGULATOR FOB INGUBATOBS. APPLICATION I'ILEDHAY 13, 190E.

Patented June 14, 1910.

H. M. SHEER. THBRMOSTATIG REGULATOR FOR INGUBATOBS.

I APPLICATION FILED HAY 13, 1908. 96 1,654.

O M m. m w M Mm MW .& a u I u J m M w W M WW0 are ofi'set therefrom andextend outwardly UNITEI) STATES PATENT OFFICE.

Emmy I. SHEER, or owner, rnmnors.

THERMOSTA'IIC REGULATOR FOR INCIl'BATOBS.

To all whom it may concern:

Be it known that I, HENRY M. SHEER, citizen of 'the United States,residin at Quincy, in the county of Adams andgtate of Illinois, haveinvented certain new anduseful Improvements in Thermostatic Regulatorsfor Incubators, of which the followin is a specification. i

i1 invention relates to an improvement in t ermostatic regulators forlncubators, and the object is to provide means whereby .two disks orwafers can be attached to a bracket, which will operate the regulatorrod on the same principle as heretofore, but the strain upon the waferswill be divided so that it is hardly noticeable to either wafer. Againthe action of the wafers is such that one wafer does not control orgovern the action of the other and that they can operate independentlyor cooperatively as a unit. By this method of operating the regulator Inot only produce the same results as obtained by a single disk or wafer,

but the action upon the regulator rod receives double motor power withthe least expansion and contraction of the wafers, which permits thewafers to be used for a greater length of time than is possible with thesingle wafer, as with the single wafer the continual strain imposed uponit in opcrating the regulator soon begins to lose its eflect after ithas beenused for a certain length of time and the wafer becomes less andless responsive to the heat action under .this continual strain.

My invent-ion consists of certain novel features of construction andcombinations of parts which will be hereinafter described and pointedout in the claims.

In the accompanying drawings: Figure 1 is a perspective view showing myinvention applled to a bracket for operating the regulator; Fig. 2 is alongitudinal sectional View through the disks and support; Fig. 3 is anend View; and Figs. 4 and 5 are views showing the disks applied todifferent forms.

A represents a bracket upon which is mounted a cross-bar 1, which isheld thereon by a screw 2. The cross-bar is slightly raised through thecenter and the outer ends and the outer ends of the bar are providedwith openings 3, 3, in which are received the shank 4 of the disk orwafer B. In Fig. 1 I have shown the compound disk but of course a singledisk can be used to the same Specification of Letters Patent. PatentedJune 14, 1910. Application filed m 13, 1908. Serial No.

advantage, and I therefore do not wish to be limited to the form of diskused. The disks or wafers are mounted upon the crossbar and extendingover the tops of the wafers is a bar 5, which is adapted to normallyrest upon the central portion of the cross-bar. The bar 5 isprovided'with openings 6, 6 at its outer ends in which are received theupper shanks 7 of the wafers.

Mounted on the bracket 1 is an arm 9, one end of which is adapted torest upon the central portion ofthe bar 5, and connected to the otherend of thearm 9 is a crank arm 10, to which is connected a rod 11, whichis connected to the regulator rod 12.

In the forms shown in Figs. 4 and 5 the only. diiference is that thearms 9 are connected directly to the rod 11 instead'of having thecrank'arm 10.

The operation 'isas follows: The expanslon of either wafer will causethe bar 5 to be raised according to the expansion of the disks orwaferswhich expansion operates the regulating rod as the arm 9 whichisconnected to the regulating rod, is in engagement with the bar 5; Theheat action Wlll act on both wafers, which will raise the bar to auniform height on each side and cause the regulator rod to be operatedaccordingly,

but if for any reason one of the wafers is not as responsive to the heataction as the other, this lack of uniformity of expansion of thetwowafers would in no wise eflect the operation of the regulator, as thebar 5 would be raised to the proper height according to the heatexpansion of the wafers. The disks are capable of operationindependently or they will coiiperate as a unit and thereby relieve thestrain upon one disk and at the same time give a double lifting power tothe regulator when acting together.

It is evident that slight changes might be resorted to in the form andarrangement of the several parts described without departing from thespirit and scope 'of my invention, and hence I do not w1sh to limitmyielf to the exact construction herein set forth,

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. The combination with a regulator, of a bracket, a cross-bar mountedupon the bracket, thermostatic Wafers mounted upon the cross-bar at eachend thereof, a bar mounted upon the cross-bar adapted to engage thethermostatic wafers, and, means connected to the regulator and inengagement with the bar,- adapted to be actuated by the movement of thebar for operating 5 the regulator. 2. The combination with a, regulator,of

a bracket having openings m either end,

a bracket, ,thermostatic wafers mounted thereon in tandem, a barconnecting the wafers and adapted to be operated thereby,

a hollow bearing extending from the bracket, a lever journaled in saidbearing and in contact with the bar connecting the wafers and means forconnecting the lever with the re lator.

t n testimony whereof I aflix my signature in presence of two witnesses.

HENRY M. SHEER.

Witnesses:

GnnnfAnn G. Animus, FRANK A. LUBBE.

